package com.sw.example.utils;

import java.io.*;

public class JsonUtils {


    /**
     * 从给定路径读取Json文件
     *
     */
    public static String readJson(String path) {

        File file = new File(path);
        BufferedReader reader = null;
        // 返回值,使用StringBuffer
        StringBuffer data = new StringBuffer();
        //
        try {
            reader = new BufferedReader(new FileReader(file));
            // 每次读取文件的缓存
            String temp = null;
            while ((temp = reader.readLine()) != null) {
                data.append(temp);
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            // 关闭文件流
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return data.toString();
    }

    public static void writeJson(String path,Object json) {
        BufferedWriter writer = null;
        File file = new File(path);

        // 如果文件不存在，则新建一个
        if (!file.exists()) {
            try {
                file.mkdirs();
                file = new File(path);
                file.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        // 写入
        try {
            writer = new BufferedWriter(new FileWriter(file));
            writer.write(json.toString());
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (writer != null) {
                    writer.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }


    public static boolean deleteJson(String path) {
        File file = new File(path);
        return file.delete();

    }

}
